YASKAWA GA700 Technical Manual page 650

11.4 C: Tuning
The drive uses the motor rated slip set to E2-02 [Motor Rated Slip] to automatically calculate the frequency range
where compensation will be disabled.
Slip compensation is enabled at frequencies as low as 2 Hz.
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C3-05: Output Voltage limit Selection
No.
Name
(Hex.)
C3-05 Output Voltage limit
Selection
(0213)
Confirm the drive current margin before setting this parameter. Setting this parameter to 0 [Enabled] increases the
output current up to a maximum of 10% when running the motor at constant speed. The reduction in flux causes a
slightly higher current to compensate torque when this function is enabled.
Enable this parameter in the following circumstances.
• Power supply voltage is low.
• Motor rated voltage is high.
• To improve speed accuracy to move heavy loads at high speeds.
Do not enable output voltage limit operation in the following circumstances.
• Driving motors at middle speed range or low speed range
• Power supply voltage is 10% or higher than the motor rated voltage
If the power supply voltage is far lower than the motor rated voltage, accurate torque control may not be possible
even if the output voltage limit operation is enabled.
0 : Disabled
1 : Enabled
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C3-16: Vout Modulation Limit Start Lvl
No.
Name
(Hex.)
C3-16 Vout Modulation
Limit Start Lvl
(0261)
■
C3-17: Vout Modulation Limit Max Level
No.
Name
(Hex.)
C3-17 Maximum Output
Voltage Limit Level
(0262)
■
C3-18: Output Voltage Limit Level
No.
Name
(Hex.)
C3-18 Output Voltage Limit
Level
(0263)
■
C3-21: Motor 2 Slip Compensation Gain
No.
Name
(Hex.)
C3-21 Motor 2 Slip
Compensation Gain
(033E)
RUN
650
V/f CL-V/f OLV CLV AOLV
Selects whether to automatically reduce the motor magnetic flux when the
output voltage is saturated.
V/f CL-V/f OLV CLV AOLV
Sets the level (modulation factor) used to start the output voltage limit
operation when C3-05 = 1 [Output Voltage limit Selection = Enabled].
V/f CL-V/f OLV CLV AOLV
Sets the level (modulation factor) used with C3-18 [Output Voltage Limit
Level] for the output voltage limit operation when C3-05 = 1 [Output
Voltage limit Selection = Enabled].
V/f CL-V/f OLV CLV AOLV
Sets the maximum drop width of the voltage reference when C3-05 = 1
[Output Voltage limit Selection = Enabled].
V/f CL-V/f OLV CLV AOLV
Sets the gain for the motor 2 slip compensation function. There is normally
no need to change this parameter from the default value.
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Default
(Range)
0
(0, 1)
Default
(Range)
90.0%
(70.0 - 90.0%)
Default
(Range)
100.0%
(85.0 - 100.0%)
Default
(Range)
90.0%
(50.0 - 100.0%)
Default
(Range)
Determined by E3-01
(0.0 - 2.5)